Siemens SINUMERIK 808D User Manual page 227

Pa rameter D a ta type
_PO REAL
_MID REAL
_FAL REAL
_FALD REAL
_FFP1 REAL
_FFD REAL
_CDIR INT
_VARI INT
The other parameters can be selected as options. They define the insertion strategy and the overlap for solid machining (to
be entered without sign):
_MIDA REAL
_AP1 REAL
_AD REAL
_RAD1 REAL
_DP1 REAL
Fu n ction
Use this cycle to machine circular pockets in the machining plane. For finishing, a face cutter is required.
The depth infeed always starts at the pocket center point and be performed vertically from there; thus it is practical to predrill
at this position.
● The milling direction can be determined either using a G command (G2/G3) or from the spindle direction as synchronous
or up-cut milling.
● For solid machining, the maximum infeed width in the plane can be programmed.
● Finishing allowance also for the pocket base.
● Two different insertion strategies:
– vertically to the pocket center
– along a helical path around the pocket center
● Shorter approach paths in the plane for finishing
● Consideration of a blank contour in the plane and a blank dimension at the base (optimum machining of preformed
pockets possible).
● _MIDA is recalculated during edge machining.
Programming and Operating Manual (Milling)
6FC5398-4DP10-0BA6, 09/2017
D e scription
Pocket center point, ordinate
Maximum infeed depth (enter without sign)
Finishing allowance at the pocket edge (enter without sign)
Finishing allowance at the base (enter without sign)
Feedrate for surface machining
Feedrate for depth infeed
Milling direction: (enter without sign)
Values:
0: Down-cut milling (in the spindle direction)
1: Conventional milling
2: With G2 (independent of spindle direction)
3: With G3
Machining type
UNITS DIGIT
Values:
1: roughing, 2: finishing
TENS DIGIT:
Values:
0: Perpendicular to the pocket center with G0
1: Perpendicular to the pocket center with G1
2: Along a helix
Maximum infeed width as a value in solid machining in the plane
Pocket radius blank dimension
Blank pocket depth dimension from reference plane
Radius of the helical path during insertion (relative to the tool center point path)
Insertion depth per 360° revolution on insertion along helical path
227